mozilla.org draws its headings and body text in Mozilla. That is the only custom font on the page. We measured it on October 21, 2026.
The fonts mozilla.org draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| Mozilla | Headings, Body text | 100% | Company typeface, not verified as obtainable | – |
Share is how much of the page’s custom-font text each font draws. System fonts and icon fonts are never counted. Each site was opened twice in a real browser and Chrome was asked which font file drew each piece of text. We count a font for a site only if both runs saw it and it drew at least 2% of the site’s custom-font text. The full method.
Can I use the same fonts?
- Mozilla: we could not verify that this typeface can be licensed, and it carries the name of the company that uses it, so we neither recommend it nor link a source.
mozilla.org among nonprofit, government and reference sites
mozilla.org is one of the 11 nonprofit, government and reference sites we measured. Across them, Merriweather is the most used font you can get, on 2 of the 11 (18%). All the fonts nonprofit, government and reference sites use.
What pairing does mozilla.org use?
mozilla.org uses one family, Mozilla, for both headings and body text. So do 280 of the 407 sites we analyzed (69%). Pairings of two different fonts.
Other nonprofit, government and reference sites we measured
- creativecommons.org DM Sans, DM Mono
- eff.org Merriweather, Montserrat
- esa.int NotesEsa
- greenpeace.org Source Sans 3, Greenpeace Sans
- redcross.org Roboto, Open Sans
- un.org Roboto
See the fonts on all 407 sites.
FAQ
What font does mozilla.org use?
mozilla.org draws its headings and body text in Mozilla. We measured it on October 21, 2026.
Is Mozilla free?
We could not verify that Mozilla can be licensed, so we do not state a licence. It carries the name of the company that uses it, which usually means a custom house font.
What font pairing does mozilla.org use?
One family, Mozilla, for both headings and body text.
Can I use the same fonts as mozilla.org on my own site?
Only if the licence allows it. Free and open-source fonts can be used freely. Commercial fonts need your own licence, even though you can see the file on mozilla.org. Each font's licence is on this page, from its source.
How do you know which font mozilla.org uses?
We opened mozilla.org in a real browser and asked Chrome which font file drew each piece of text, twice in separate sessions. A font counts only if both runs saw it and it drew at least 2% of the site's custom-font text.
Can I check a different website?
Yes. Paste its address into the free font finder.